Paper-carrier for type-writers.



No. 644,266. Patented Feb. 27, 1900.

E. VAN DER'BELEN. PAPER CARRIER FOR TYPE WRITERS.

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Patented Feb. 27.190 0. E. VAN DER BELEN.

PAPER CARRIER FOR TYPE WRITERS.

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EDOUARD VAN DER BELEN, OF BRUSSELS, BELGIUM.

PAPER-CARRIER FOR TYPE-WRITERS.

SPECIFICATION forming part of Letters Patent No. 644,266, dated February27', 1900.

Application filed November '7, 1898. Serial No.695,698. (No model.)

To all whom it may concern.-

Be it known that I, EnoUARD VAN DER BELEN, abb, of No. 21 Rue de Ligne,Brussels, in the Kingdom of Belgium, have inventeda new and usefulImprovementin Paper-Carriers for Type-Writers, of which the following isa specification.

This invention relates to a new kind of paper-carrier for type-writersso arranged that a complete page can be written filling the sheet fixedon the cylinder Without requiring to touch the cylinder. Increased speedis thus attained, and the writing or copying is greatly facilitated, asthe operator has to perform no working of the paper-carrier and cantherefore give his mind entirely to the mental operations of composingor copying.

It is known that in all existing type-writers the carriage and cylinderautomatically move.

longitudinally for each letter written, and when the line is ended theoperator has to leave the keyboard and move the carriage by hand to itsinitial position ready for a fresh line and has, besides, to turn thecylinder sufficiently for such line, this also being generally doneeither by hand directly or by a pawl-lever actuating a ratchet-wheel orotherwise. According to my invention these operations are completelydispensed with, so that the operator need not leave his keyboard untilthe page is completed. In order to effect this, I give the cylinder adouble motion longitudinal and rotary; but, contrary to the arrangementin existing machines, the longitudinal movement gives the distance fromline to line and the rotation gives the spacing of the letters andwords.

The new paper-carrying mechanism is represented in the annexed drawings,which show only this mechanism without the other parts of thetype-writer-such as the keyboard, the lovers, and the other organs,which may be of any known kind-the present invention being confined tothe paper-carrying device, which may be applied to any type-writer.

Figure 1 of the drawings is a front View of the paper-carrier. Fig. 2 isa plan, and Fig. 3 is a vertical section on the line a; a of Fig. 1.Fig. 4 shows a modified construction of the cylinder. Fig. 5 shows thefixing for the paper on the cylinder. Fig. 6 shows the page spread out,and Fig. 7 illustrates matter hereinafter referred to.

An essential part of the invention consists in the placing of the paper.It has been said above that the longitudinal movement of the cylinderregulates the distance from line to line, while the rotation determinesthe spacing of the letters and words. Consequently the paper is placedon the cylinder in a way contrary to that in ordinary type-writers thatis to say, it is so placed that the line of writing extends around thecircumference of the cylinder, so that the writing appears in thedirection of the rotation, the letters lying on their sides, Whereas inordinary machines the lines are horizontal or parallel to the axis ofthe cylinder and the letters are upright.

Fig. 1 indicates the arrangement of the writ ten lines. Fig. 6 shows thesheet laid out fiat.

As stated above, the cylinderA has a simultaneous longitudinal androtary movement. For this purpose it has at one end a screwthreadedspindle B, with slow pitch, suited to the desired distance from line toline, and at the other end it has a spindle 0, not threaded, but ofspecial form, hereinafter referred to. The threaded spindle B works in anutbearing having a removable cap, so that the spindle and cylinder canbe lifted off. The other spindle C is attached to the cylinder by ahinge E, which allows the lifting of the cylinder in order to facilitatethe fixing and removal of the paper. On the spindle O, which has a flatside F, as shown in Fig. 3, is fitted a ratchet-wheel G and a toothedwheel H, connected to G by a sleeve I, carried in a bearing J, thespindle C sliding with moderate friction in the sleeve. The wheel H iscaused to rotate byclockwork K, which is wound up by a key at b, and thewheel H turns the spindle O and the cylinder A,while the screw B inrotating in the nut D causes the cylinder to move longitudinally. Thecylinder A having these two movements, longitudinal and rotary, itfollows that unless a special precaution, which I am about to explain,be taken, the writing would not be as shown in Fig. 6, but as in Fig. 7,not parallel and perpendicular to the edges of the sheet, but

inclined. To prevent this, the paper is fixed obliquely on the cylinder,as shown in Fig. 1, this obliquity being determined by an inclinedshoulder L at each end of the oylinder, so that the paper of itselftakes the required position. Under these conditions the lines take theproper direction. If the line begins at M, Figs. 1 and 7, this line willend at N after a revolution of the cylinder, and as the rotationcontinues the next line will begin at O, and so on by P Q R, the.

In order to produce a margin, the ratchetwheel G has a part S withoutteeth. When the operator depresses one of the keys T, this moves a leverU, connected at V to a pawl Wflwhich, as in all other type-writers, letsthe wheel G turn one tooth, corresponding to the width of a letter. Whenthe part S Without teeth reaches the pawl, the wheel freely turns theextent of S, producing the margin.

Then a passage ends before the end of a line and the rest of the linehas to be left blank, the cylinder is allowed to turn without anyimpression being made, and this is done by moving a button Z orotherwisewithdrawing the pawl W.

The paper is held on the cylinder by two spring-bands a, one at eachend.

It has been explained above how the advance from line to line is made.The space from line to line can be varied by varying the pitch of thescrew B, and the width of margin may be varied by varying the extent ofthe are S, which has no teeth.

As in the arrangement described the types all strike at the same placeand height,'obviously, in consequence of the obliquity of the paper,there would be an unequal margin. This could be obviated by giving atwist to the fiat part F of the spindle C. This twist, combined with theobliquity of the paper, necessarily modifiesin advancing the relativepositions of the cylinder and starting-point relatively to the axis ofthe cylinder, thus making the width of the margin uniform.

Fig. 4: shows a modification of the spindle C, which in this case passesalong the interior of the cylinder A, the working mechanism remainingthe same as before; but for the nut-bearing D is substituted a meresupport D, the nut D" being in the end of the cylinder. It may bereadily understood that as the cylinder moves to the left the screw 13enters farther and farther into the cylinder while the spindle Cretires.

It is to be understood that the diameter and length of the cylinder haveto be suited to the dimensions of the paper employed, so that thetype-writer should be provided with several cylinders of differentsizes.

The movement of the cylinder, instead of being efiected by clockwork, asabove described, might obviously be elfected by any suitable motor. Alsothe mechanical details might be largely varied without departing fromthe fundamental principles of the invention. Thus, without limitingmyself to details,

I claim- In a type-writer, the combination with the horizontal spindlehaving a threaded portion engaging a nut-bearing, and the platen carriedby said spindle, with means for clamping the paper obliquely thereon, ofa motor for rotating said spindle, a ratchet-wheel having mutilatedportion in line with the edge of the paper to form the margin, and anescapement-pawl cooperating with said ratchet-wheel, substantially asdescribed.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

EDOUARD VAN DER BELEN.

Witnesses:

AUGUSTE DE OEURTER, CHARLES KENOTTE.

